参数资料
型号: TS80C31X2-MCA
厂商: Atmel
文件页数: 15/42页
文件大小: 0K
描述: IC MCU 8BIT 40/20MHZ 40-DIP
标准包装: 27
系列: 80C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40/20MHz
连通性: UART/USART
外围设备: POR
输入/输出数: 32
程序存储器类型: ROMless
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: 0°C ~ 70°C
封装/外壳: 40-DIP(0.600",15.24mm)
包装: 管件
22
4428E–8051–02/08
AT/TS80C31X2
Figure 11-1. Power-Down Exit Waveform
Exit from power-down by reset redefines all the SFRs, exit from power-down by external inter-
rupt does no affect the SFRs.
Exit from power-down by either reset or external interrupt does not affect the internal RAM
content.
Note:
NOTE: If idle mode is activated with power-down mode (IDL and PD bits set), the exit sequence is
unchanged, when execution is vectored to interrupt, PD and IDL bits are cleared and idle mode is
not entered.
Table 11-1.
The state of ports during idle and power-down modes
INT1
INT0
XTAL1
Power-down phase
Oscillator restart phase
Active phase
Mode
Program
Memory
ALE
PSEN
PORT0
PORT1
PORT2
PORT3
Idle
External
1
Floating
Port Data
Address
Port Data
Power Down
External
0
Floating
Port Data
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